Convertible mold.



Z. R. ASHBAUGH. v

CONVERTIBLE MOLD.

APPLICATION man JUNE I2. I915.

1, 1 89,337 Patented July 4, 1916.

IIVVENTOR 1 A TTOB/VEY,

ZINA R. ASHIBAUGH, on KANSAS C TY, MISSOURI.

CONVERTIBLE MOLD.

Specification of Letters Patent.

Patented'July. 4, 1916.

Application filed June 12, 1915. Serial No. 33,746..

To all whom it may concern Be it known that I, ZINA R. ASHBAUGH, acitizen of the United States, residing at Kansas City, in the county ofJackson and State of Missouri, have invented certain new and usefulImprovements in Convertible Holds, of which the following is aspecification.

My invention relates to improvements in convertible molds in whichplastic products such as door frames, silo staves, etc., can be readilycast; and among the, objects of the invention are first, the productionvof a simple and inexpensive mold which can be quickly converted intodifferent forms for molding cement products of various shapes,

and second, the production of a mold of such configuration that it canbe readily removed from the green products Without injury thereto.

Other objects of the invention will hereinafter appear, and in orderthat said invention may be fully understood, reference will now be madeto the accompanying drawing,

in which:

Figure 1 is a plan of the mold arranged for the production of cementdoor frames. Fig. 2 is a cross section on line 11-11 of Fig. 1. Fig. 3is a plan of the mold arranged for the production of cement staves andthe like. Fig. 4 is a longitudinal section on line IV-IV of Fig. 3, withthe division plate removed. Fig. 5 is a cross section on line V-V ofFig. 3. Fig. 6 is a detail of the division plate for use in connectionwith the mold when converted to the form disclosed by Fig. 3. p

In arranging the mold for the door frames, I employ two longitudinalmembers 1 and 2, and two transverse members 3 and 3 The longitudinalmember 1 is provided at one end with a centrally disposed hinge member 4and at its opposite end With a tongue 5 to which a bifurcated handle 6,may be removably connected by a suitable pivot 7. The longitudinalmember 2 is provided atone end with a pair of hinge members 8 and at itsopposite end with a tongue 9. The outer surface of the tongue 9 iscurved and so related to the pivot of the handle 6, that when the latteris adjusted into engagement with said curved surface the abutting endsof the members 2 and 3 will be firmly locked together. The trans versemember 3 is provided at one end With a pair of hinge members 10 and atits opposite end with. a hinge member 11. The hinge members of themember 3 are pivotally connected to. the hinge members of the members 1and 2 by suitable pivots 12. The transverse member 3 is provided at oneend Wlth a pair of hinge members 13 and at its opposite end with anabutment 14:, to which latter the handle 6. may be connected by a pivot.15, as disclosed by Fig. 1. The hinge members13v are spacedapart toreceive the tongue 5, to which they are connected by thepivot 7. Thetransverse members 3 and 3 have longitudinal centrally-disposed beads 16and 17, respectively, to form grooves in the top. and, bottom of thecement door frames. Said transverse members 3 and 3 also are provided attheir ends with shoulders 18 and 19, respectively, to fit incorresponding notches in the longitudinal members 1 and 2 and thusassist in holding the members 1, 2, 3 and 3. in proper .relation to eachother when. the mold is closed, as disclosed by Fig. 1. The members. 1and 2 present two opposing, short, intermediate, parallel sides 24 and'25, communicating at their ends wlth elliptical curved portions 26 and27, which in turn connect. with oppositely-extending, converging sides28 and 29, communicating with elliptical curved terminals 30 and 31,respectively.

The inner edges of the members 1 and 2 bevel outwardly as indicated at32 from one end of the short side '24 to one end of the short side 25,and the remainder of said inner edges bevel inwardly as indicated at 33.The bevel portions 32 and 33 are interrupted by a bead 34, extendingaround-the entire length of the inner edges of the members 1 and 2.

The cement door frames may be made either straight or curved and if thelatter form is preferred the top of the pallet 22 is curved and the moldis likewise curved, as disclosed by Fig. 2. The curved form of doorframe is preferably for silos and other structures having a curved orcircular wall.

In the production of cement door frames, the mold is set up as disclosedby Fig. 1 and the cement is poured into the space A until the same isfilled, after which the surplus cement is struck off flush with the top.of the mold and the surface finished. The

cement remains in the mold until it becomes set, after which the core 20is lifted out of 110 place and the handle 6 is swung out of engagementwith the tongue 9. The mold is then swung. open on its hinges andremoved from the pallet and the cement door frame resting thereon. Whencement staves are to be produced instead of cement door frames thepivots 7 and 12 are taken out and the transverse members 3 and 3removed. The two longitudinal members 1 and 2 are then hinged togetherby passing one of the pivots 12 through the hinge members 4 and 8,respectively, and the handle 6 is removed from the member 3 and securedto the tongue 5 of member 1 by the pivot 7.

The arrangement of the bevel edges 82 and 33 and the bead 34 results inthe production of staves having edges which interlock when placedagainst each other, and also in the formation of a continuous grooveextending around the entire edge of each stave for the reception ofcream cement which makes an air and water tight joint between the staveswhen the same are placed edge to edge.

In order that half staves may be produced in the mold, I provide adivision plate 35, which is set in notches in opposite sides of the bead34, as disclosed by Fig. 8. The underside of the mold is closed by apallet 22.

In practice the mold is laid on the pallet 22 and then filled withcement which is thoroughly tamped therein, after which the surpluscement is struck off flush with the top of the mold. Handle 6 is thenswung out of engagement with the tongue 9 and the two members 1 and 2are swung open to clear the cement stave, which is then removed on thepallet 22 WVhen the mold is swung open there is no danger of breakingthe corners of the green stave as the elliptical curved portions 26, 27,and 31, clear said green stave without injury thereto.

Having thus described my invention, What I claim and desire to secure byLetters Patent, is:

A mold of the character described, consisting of two longitudinalmembers provided with notches near their ends, a transverse memberhinged at its ends to an end of each longitudinal member, a secondtransverse member hinged at one end to one of the longitudinal membersand abutting at its opposite end against the other longitudinal member,shoulders on said transverse members to enter the notches in thelongitudinal members, centrally disposed beads extending longitudinallyof the inner edges of the transverse members, and a pivoted handle forlocking the abutting end of the second transverse member against thelongitudinal member.

In testimony whereof I affix my signature,"

Vitnesscs F. G. FISCHER, 1

L. J. FISCHER.

Ooplu of thin patent may be obtained for five cent each, by lddreningthe "Commissioner of Intel",

' Washington, D. 0."-

